What is the primary function of RAIM?

The primary function of RAIM, or Receiver Autonomous Integrity Monitoring, is fault detection. RAIM is a critical feature in satellite navigation systems that performs integrity monitoring of the signals received from GPS satellites. Its main purpose is to ensure that the navigation system is providing accurate and reliable position information by detecting any faults or errors in the satellite signals.

RAIM evaluates the quality of the incoming GPS signals by analyzing the redundancy of satellite signals and can identify if one or more of the signals are faulty or not providing accurate data. It checks for inconsistencies among the signals and can alert the user if an anomaly is detected, thereby enhancing the reliability of navigation information.

In contrast, improving signal strength, data storage, and signal compression are not functions of RAIM. These aspects may pertain to other technologies or processes in data transmission or storage but do not relate directly to the integrity and reliability of the navigation signals that RAIM is designed to monitor.